{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["material", "engineering feature", "enabling technology", "application", "concept or principle", "machine or equipment"], "input": "Initial methods developed remove materials bit by bit using a strain energy distribution and a preset threshold value ."}
{"material": [], "engineering feature": [], "enabling technology": [], "application": [], "concept or principle": ["materials", "distribution"], "machine or equipment": []}